AA 1011 then AA 5318 at Charlotte
Miami → Charlotte → Lexington
Timetable, Charlotte time
20:10AA 1011 from Miami at the gate
19:28AA 5318 to Lexington leaves the gate
23 h 18 apart on the timetable, overnight
AA 5318 leaves 23 h 18 after AA 1011 arrives on the timetable: more than half a day, so not a connection we count.